[SOLVED]Jack doesn't work anymore

Good day people,It seems that Jack stopped working all of a sudden. Well, it's not really all of a sudden, it hasn't been working for 3 months or so, but before that it worked just fine and I did not change any setting since then. I didn't post before because I don't really use JACK too often but now it seems like I'll be going to need it.

The package I'm using is jack2 from the community repository, not jack2-dbus or jack or any other package, although I've tried them with the same results.

I've tried deleting all jack config files, changing settings and before you ask, I've tried with and without pulseaudio (which got along with Jack just fine before everything broke). It seems to be a d-bus problem at first but it gives me issues with d-bus disabled as well. I've read A LOT of forum posts and mailing lists before posting here and I can tell you that none of the solutions that worked for others worked for me, and many just gave up.

I don't have any audio/drive issues and as I said, my computer used to run Jack2 just fine. The output of cat /proc/asound/cards is

0 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0xf0400000 irq 45

It seems strange to me that jack2 and jack2-dbus act exactly the same way in regards to dbus but dbus is just one of the several problems, it seems. Right now I'm running my music production thanks to a live Ubuntu Studio stick (the horror, I know) and after extensive research I feel I'm out of ideas. I mean, I uninstalled jack and deleted all config files and it still doesn't go back to normal, what can I do? I suspect my problem may be related to improper configuration of something in /etc/ but I didn't touch anything audio-related in ages and as I said, jack used to work with the same configuration. It seems to have problem accepting that my sound card is hw:0, maybe. I don't know, it makes me crazy. Can someone help me? Thanks.

Edit: The problem is solved, checkout my last reply to this thread for the solution.

Re: [SOLVED]Jack doesn't work anymore

Looks like I was able to solve it on my own! I've noticed this thread is already on top of Google results so I figured I could share with others who suffer from it what worked for me.

It seems that my problem was caused by - unsurprisingly - PulseAudio! While my configuration worked like a charm for a while, it seems like I at some point have modified the contents of my .pulse folder, losing the essential default.pa configuration file. If you encounter the same problem I encountered, the solution can be found on the official Jack Wiki, but I'll repost it just in case,

Re: [SOLVED]Jack doesn't work anymore

Hi, I'm having a similar issue. I've been using jack2 as the main audio server with pulseaudio routed through it for more than a year with no issues until a couple of weeks ago when after a power failure jack just stopped working.

After double checking my conf (found nothing strange, again, I'm using jack in normal production for over a year and havent touched conf in a while) and downgrading kernels and jack with no success I realized that if I suspended the PC, and tryed to start jack after resuming it, there wasnt any problems at all!!? Jack works!

Something similar happens in my laptop (same setup), but in this case jack fails to start only the first try, on the 2nd try it will start flawlesly.

Could it be related to systemctl?? dbus?? (the same happens with Dbus interface enabled or not)Pulseaudio? I've read in forums there are some issues between jack and pulseaudio, and in fact I can see pulseaudio “dead” in both situations (jack working and not)

Re: [SOLVED]Jack doesn't work anymore

i just installed JACK2. i then had trouble starting it (jack_control start), kept getting the error missing dbus.i then installed dbus-python (from google arch forum) and now it works.maybe this should be on the wiki? im not sure what installing dbus-python did, nice to know - anyone ?